CVE-2022-50457

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2022-50457", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-10-01T11:38:45.640Z", "datePublished": "2025-10-01T11:45:30.263Z", "dateUpdated": "2026-10-30T12:17:10.412Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-30T12:17:10.412Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmtd: core: Fix refcount error in del_mtd_device()\n\ndel_mtd_device() will call of_node_put() to mtd_get_of_node(mtd), which\nis mtd->dev.of_node. However, memset(&mtd->dev, 0) is called before\nof_node_put(). As the result, of_node_put() won't do anything in\ndel_mtd_device(), and causes the refcount leak.\n\ndel_mtd_device()\n memset(&mtd->dev, 0, sizeof(mtd->dev) # clear mtd->dev\n of_node_put()\n mtd_get_of_node(mtd) # mtd->dev is cleared, can't locate of_node\n # of_node_put(NULL) won't do anything\n\nFix the error by caching the pointer of the device_node.\n\nOF: ERROR: memory leak, expected refcount 1 instead of 2,\nof_node_get()/of_node_put() unbalanced - destroy cset entry: attach\noverlay node /spi/spi-sram@0\nCPU: 3 PID: 275 Comm: python3 Tainted: G N 6.1.0-rc3+ #54\n 0d8a1edddf51f172ff5226989a7565c6313b08e2\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS\nrel-1.15.0-0-g2dd4b9b3f840-prebuilt.qemu.org 04/01/2014\nCall Trace:\n<TASK>\n dump_stack_lvl+0x67/0x83\n kobject_get+0x155/0x160\n of_node_get+0x1f/0x30\n of_fwnode_get+0x43/0x70\n fwnode_handle_get+0x54/0x80\n fwnode_get_nth_parent+0xc9/0xe0\n fwnode_full_name_string+0x3f/0xa0\n device_node_string+0x30f/0x750\n pointer+0x598/0x7a0\n vsnprintf+0x62d/0x9b0\n ...\n cfs_overlay_release+0x30/0x90\n config_item_release+0xbe/0x1a0\n config_item_put+0x5e/0x80\n configfs_rmdir+0x3bd/0x540\n vfs_rmdir+0x18c/0x320\n do_rmdir+0x198/0x330\n __x64_sys_rmdir+0x2c/0x40\n do_syscall_64+0x37/0x90\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\n\n[<miquel.raynal@bootlin.com>: Light reword of the commit log]"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/mtd/mtdcore.c"], "versions": [{"version": "63aff1411fc609d737830b79c6b06ce62348c582", "lessThan": "0de86087b20675c53fda2bc903dfc26a7ec99856", "status": "affected", "versionType": "git"}, {"version": "00596576a05145a1b5672897a82ef87af00becf4", "lessThan": "f6016557f1ef7735963bd8691592d2797bbf91d2", "status": "affected", "versionType": "git"}, {"version": "00596576a05145a1b5672897a82ef87af00becf4", "lessThan": "616dc895d982026f41f500c88d1bfea004938cc8", "status": "affected", "versionType": "git"}, {"version": "00596576a05145a1b5672897a82ef87af00becf4", "lessThan": "56570bdad5e31c5c538cd6efff5c4510256e1bb4", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/mtd/mtdcore.c"], "versions": [{"version": "5.17", "status": "affected"}, {"version": "0", "lessThan": "5.17", "status": "unaffected", "versionType": "semver"}, {"version": "6.0.16", "lessThanOrEqual": "6.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.2", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.2", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.17", "versionEndExcluding": "6.0.16"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.17", "versionEndExcluding": "6.1.2"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.17", "versionEndExcluding": "6.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/0de86087b20675c53fda2bc903dfc26a7ec99856"}, {"url": "https://git.kernel.org/stable/c/f6016557f1ef7735963bd8691592d2797bbf91d2"}, {"url": "https://git.kernel.org/stable/c/616dc895d982026f41f500c88d1bfea004938cc8"}, {"url": "https://git.kernel.org/stable/c/56570bdad5e31c5c538cd6efff5c4510256e1bb4"}], "title": "mtd: core: Fix refcount error in del_mtd_device()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/mtd/mtdcore.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "0de86087b20675c53fda2bc903dfc26a7ec99856", "status": "affected", "version": "63aff1411fc609d737830b79c6b06ce62348c582", "versionType": "git"}, {"lessThan": "f6016557f1ef7735963bd8691592d2797bbf91d2", "status": "affected", "version": "00596576a05145a1b5672897a82ef87af00becf4", "versionType": "git"}, {"lessThan": "616dc895d982026f41f500c88d1bfea004938cc8", "status": "affected", "version": "00596576a05145a1b5672897a82ef87af00becf4", "versionType": "git"}, {"lessThan": "56570bdad5e31c5c538cd6efff5c4510256e1bb4", "status": "affected", "version": "00596576a05145a1b5672897a82ef87af00becf4", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/mtd/mtdcore.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.17"}, {"lessThan": "5.17", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.0.*", "status": "unaffected", "version": "6.0.16", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.2", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.2", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "2701BF1F-7C10-4D86-93E6-AA6DF5D8A6A3", "versionEndExcluding": "6.0.16", "versionStartIncluding": "5.17", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "77239F4B-6BB2-4B9E-A654-36A52396116C", "versionEndExcluding": "6.1.2", "versionStartIncluding": "6.1", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmtd: core: Fix refcount error in del_mtd_device()\n\ndel_mtd_device() will call of_node_put() to mtd_get_of_node(mtd), which\nis mtd->dev.of_node. However, memset(&mtd->dev, 0) is called before\nof_node_put(). As the result, of_node_put() won't do anything in\ndel_mtd_device(), and causes the refcount leak.\n\ndel_mtd_device()\n memset(&mtd->dev, 0, sizeof(mtd->dev) # clear mtd->dev\n of_node_put()\n mtd_get_of_node(mtd) # mtd->dev is cleared, can't locate of_node\n # of_node_put(NULL) won't do anything\n\nFix the error by caching the pointer of the device_node.\n\nOF: ERROR: memory leak, expected refcount 1 instead of 2,\nof_node_get()/of_node_put() unbalanced - destroy cset entry: attach\noverlay node /spi/spi-sram@0\nCPU: 3 PID: 275 Comm: python3 Tainted: G N 6.1.0-rc3+ #54\n 0d8a1edddf51f172ff5226989a7565c6313b08e2\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS\nrel-1.15.0-0-g2dd4b9b3f840-prebuilt.qemu.org 04/01/2014\nCall Trace:\n<TASK>\n dump_stack_lvl+0x67/0x83\n kobject_get+0x155/0x160\n of_node_get+0x1f/0x30\n of_fwnode_get+0x43/0x70\n fwnode_handle_get+0x54/0x80\n fwnode_get_nth_parent+0xc9/0xe0\n fwnode_full_name_string+0x3f/0xa0\n device_node_string+0x30f/0x750\n pointer+0x598/0x7a0\n vsnprintf+0x62d/0x9b0\n ...\n cfs_overlay_release+0x30/0x90\n config_item_release+0xbe/0x1a0\n config_item_put+0x5e/0x80\n configfs_rmdir+0x3bd/0x540\n vfs_rmdir+0x18c/0x320\n do_rmdir+0x198/0x330\n __x64_sys_rmdir+0x2c/0x40\n do_syscall_64+0x37/0x90\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\n\n[<miquel.raynal@bootlin.com>: Light reword of the commit log]"}], "id": "CVE-2022-50457", "lastModified": "2026-10-30T13:17:14.620", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2025-10-01T12:15:38.967", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0de86087b20675c53fda2bc903dfc26a7ec99856"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/56570bdad5e31c5c538cd6efff5c4510256e1bb4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/616dc895d982026f41f500c88d1bfea004938cc8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f6016557f1ef7735963bd8691592d2797bbf91d2"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-Other"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: mtd: core: Fix refcount error in del_mtd_device()", "id": "2400823", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2400823"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["No description is available for this CVE."], "name": "CVE-2022-50457", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:rhivos:1", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat In-Vehicle Operating System 1"}], "public_date": "2025-10-01T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-50457\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-50457\nhttps://lore.kernel.org/linux-cve-announce/2025100118-CVE-2022-50457-da35@gregkh/T"], "threat_severity": "Low"}

{"created": "2025-10-02T08:38:39.020811+00:00", "updated": "2025-10-02T08:38:39.020886+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}